EP2700499B1 - Conduite en acier enrobée de matière plastique - Google Patents

Conduite en acier enrobée de matière plastique Download PDF

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Publication number
EP2700499B1
EP2700499B1 EP13075052.4A EP13075052A EP2700499B1 EP 2700499 B1 EP2700499 B1 EP 2700499B1 EP 13075052 A EP13075052 A EP 13075052A EP 2700499 B1 EP2700499 B1 EP 2700499B1
Authority
EP
European Patent Office
Prior art keywords
layer
particles
pipeline according
pipeline
layers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP13075052.4A
Other languages
German (de)
English (en)
Other versions
EP2700499A1 (fr
Inventor
Jörn WINKELS
Hans-Jürgen Dr. Kocks
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Salzgitter Mannesmann Line Pipe GmbH
Original Assignee
Salzgitter Mannesmann Line Pipe GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Salzgitter Mannesmann Line Pipe GmbH filed Critical Salzgitter Mannesmann Line Pipe GmbH
Priority to PL13075052T priority Critical patent/PL2700499T3/pl
Publication of EP2700499A1 publication Critical patent/EP2700499A1/fr
Application granted granted Critical
Publication of EP2700499B1 publication Critical patent/EP2700499B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a non-planar shape
    • B32B1/08—Tubular products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/18—Layered products comprising a layer of metal comprising iron or steel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
    • F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
    • F16L58/04—Coatings characterised by the materials used
    • F16L58/10—Coatings characterised by the materials used by rubber or plastics
    • F16L58/1054—Coatings characterised by the materials used by rubber or plastics the coating being placed outside the pipe
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
    • F16L9/147—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and plastics with or without reinforcement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/02—Synthetic macromolecular particles
    • B32B2264/0214—Particles made of materials belonging to B32B27/00
    • B32B2264/0257—Polyolefin particles, e.g. polyethylene or polypropylene homopolymers or ethylene-propylene copolymers

Definitions

  • the invention relates to a plastic-coated pipe made of steel for the transport of liquid or gaseous media, according to the preamble of claim 1.
  • Media to be transported may be, for example, water, oil, natural gas or other media.
  • the pipeline consisting of individual composite pipes, can be laid underground or above ground or in water.
  • Epoxy resin, polyethylene, polypropylene, polyurethane and polyamide are preferably used for this purpose.
  • the corrosion protection layer is often only 1 to 2 mm thick, there is the problem of protecting them from mechanical damage during transport and during installation of the pipeline.
  • the coated tubes are therefore additionally sheathed with another protective sheath made of a harder material.
  • Such a plastic-coated pipe is eg from the JP 2003314753 A known.
  • the first applied to the pipe layer serves the actual corrosion protection and the second layer to protect against mechanical damage that may occur, for example, during handling or during installation of the pipes.
  • the sheath of the steel pipe may consist of a 2 mm thick polyethylene sheath and a cladding applied thereto of 3 mm thick polypropylene or polyamide.
  • the effectiveness of the protection of a jacket depends on its quality, ie on the accuracy, the coating. Errors or damage to the coating, the cause an electrical contact of the pipe with soil or water, allow a corrosive attack on the steel pipe, which can affect large-scale delamination of the coating and ultimately can lead to failure of the pipeline.
  • the degree of delamination depends on the type of coating system and the prevailing corrosion conditions, such as the conductivity of the soil, the pH, etc.
  • shear forces may already occur during production, for example in the mechanical processing of the pipe ends for weld preparation, in which the casing is processed in stages from the pipe end and in which the individual layers of the casing must withstand, i. a relative shift between the layers must not occur.
  • the layers of the jacket are usually bonded together in a hot state when hot or an adhesive is applied between the layers to ensure the adhesive bond of the individual jacket layers.
  • the object of the invention is therefore to provide a multi-layer plastic-coated steel pipeline for the transport of liquid or gaseous media, in which the sheathing on the one hand, the occurring shear forces during processing and Laying, especially in trenchless laying, can withstand, but on the other hand, a possibly present in the outer jacket crack is not forwarded to the underlying sheath layer and in particular not to the steel bottom of the tubular body.
  • a plastic-coated steel pipeline for transporting media such as liquids or gases
  • a shell consisting of at least two layers that are applied separately to the tubes of the pipeline, which is characterized in that the individual layers in the course the sheath are connected to each other only positively, wherein at least the surface of a layer in the contact plane is provided with a friction of the frictional partner increasing coating.
  • the great advantage of the invention is that on the one hand a cohesive adhesive bond between the layers is avoided, which would adversely affect any crack propagation in the sheath, but on the other hand by increasing the static friction provides a sufficient shear resistance, the relative displacement of the sheath layers to each other prevents the processing of the pipe ends or when laying the pipe.
  • the coating which increases the static friction of the superimposed cladding layers may consist of material particles applied to the surface of the cladding layer and thus materially bonded thereto.
  • the increased static friction is achieved according to the invention by increasing the roughness between the friction partners, e.g. realized the first and the second cladding layer. Accordingly, e.g. be incorporated in a three-layer structure between the first and second and the second and third sheath layer material particles to increase the stiction.
  • the coating layer applied to the tube should not yet be solidified so that the particles applied, for example, by scattering can still cohesively connect to this layer.
  • This first cladding layer can consist of epoxy resin, polyethylene, polypropylene, polyurethane or polyamide, for example.
  • a cohesive connection of the layers with one another is avoided either by applying to a non-polar plastic system, e.g. Polyethylene, a polar system, e.g. Polyamide is applied. In this case, it does not matter which temperature the first layer still has before the application of the second layer, since a cohesive connection is excluded.
  • a non-polar plastic system e.g. Polyethylene
  • a polar system e.g. Polyamide
  • non-polar first plastic system e.g. Polyethylene
  • another non-polar plastic system e.g. Polypropylene
  • the cohesion can be prevented by a corresponding temperature control.
  • the particles applied to the surface of the first cladding layer may be made of any material, e.g. Particles of plastic, inorganic granules or sand.
  • the material particles themselves should be evenly distributed on the surface of the cladding layer so as to uniformly disperse frictional ratios distributed over the contact plane of the cladding layers.
  • the particles themselves should have a size smaller than the layer thickness of the thinnest cladding layer to be applied, so that they can not push through the cladding layer to the outside and cause surface defects.
  • the aforementioned embodiments of the invention are not limited to plastic-coated steel pipes or pipes, but also for existing of solid plastic piping, which should be provided with an additional plastic casing, eg as protection against mechanical damage applicable.
  • a section of a plastic coated steel pipe according to the invention produced according to the invention is shown in a schematic diagram, consisting of a pipe 1 a pipe whose outer surface is provided with a two-layer anti-corrosion coating 2.
  • the tube 1 may be a longitudinally welded, helically welded or seamless tube.
  • the plastic casing 2 in this case consists of a first 2 mm thick polyethylene layer 3 applied to the pipe 1 as corrosion protection and a second layer of 2 mm thick polyamide 4 applied thereon as mechanical protection.
  • the two layers 3, 4 are not materially connected but only positively connected to each other.
  • the first layer 3 has been provided with the roughness-increasing particles 5 in order to increase the static friction before the application of the second layer 4, so that with the application of the layer 4 a higher static friction is present by mechanical interlocking with the layer 3.
  • the size of the particles 5 is adapted so that they are not greater than the thickness of the individual cladding layers, but still clearly emphasize the surface as roughness peaks after melting and bonding and thus suitable for "clawing" with the subsequently applied polyamide layer 4 and thereby significantly increase the stiction.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Claims (10)

  1. Conduite en acier enveloppée de matières plastiques pour le transport de substances telles que des liquides et des gaz avec une enveloppe (2) composée d'au moins deux couches (3, 4) séparées appliquées par voie thermoplastique sur les tuyaux (1) de la conduite, caractérisée en ce
    que les différentes couches (3, 4) ne sont reliées entre elles que par verrouillage mécanique au cours de l'enveloppement, la surface d'une couche (3, 4) au moins étant prévue dans le plan de contact avec un revêtement augmentant le frottement par adhérence des partenaires de friction.
  2. Conduite selon la revendication 1,
    caractérisée en ce
    que le revêtement se compose de particules (5) appliquées à la surface de la couche (3, 4) et dès lors reliées par accouplement.
  3. Conduite selon la revendication 2,
    caractérisée en ce
    que le revêtement se compose de particules (5) appliquées à l'état chaud à la surface de la couche (3, 4) et dès lors reliées par accouplement.
  4. Conduite selon la revendication 2,
    caractérisée en ce
    que les particules (5) sont reliées par accouplement à l'aide d'un adhésif avec la surface d'au moins une couche (3, 4).
  5. Conduite selon l'une des revendications 2 à 4,
    caractérisée en ce
    que les particules (5) se composent de plastique, de granulats inorganiques ou de sable.
  6. Conduite selon l'une des revendications 2 à 5,
    caractérisée en ce
    que les particules (5) sont réparties uniformément la surface d'au moins une couche (3, 4).
  7. Conduite selon l'une des revendications 2 à 6,
    caractérisée en ce
    que les particules (5) présentent une dimension inférieure à l'épaisseur de la couche la plus fine à appliquer (3,4).
  8. Conduite selon la revendication 7,
    caractérisée en ce
    que les particules (5) présentent une taille des grains de 0,1 à 3 mm.
  9. Conduite selon la revendication 8,
    caractérisée en ce
    que les particules (5) présentent une taille des grains de 0,2 à 0,5 mm.
  10. Conduite selon au moins l'une des revendications 1 à 9,
    caractérisée en ce
    que les couches (3, 4) de l'enveloppe en plastique (2) se composent de résine époxy, de polyéthylène, de polypropylène, de polyuréthane et/ou de polyamide.
EP13075052.4A 2012-08-24 2013-08-06 Conduite en acier enrobée de matière plastique Active EP2700499B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL13075052T PL2700499T3 (pl) 2012-08-24 2013-08-06 Osłonięty tworzywem sztucznym przewód rurowy ze stali

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012017223.0A DE102012017223A1 (de) 2012-08-24 2012-08-24 Kunststoffummantelte Rohrleitung aus Stahl

Publications (2)

Publication Number Publication Date
EP2700499A1 EP2700499A1 (fr) 2014-02-26
EP2700499B1 true EP2700499B1 (fr) 2015-06-10

Family

ID=49035262

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13075052.4A Active EP2700499B1 (fr) 2012-08-24 2013-08-06 Conduite en acier enrobée de matière plastique

Country Status (4)

Country Link
EP (1) EP2700499B1 (fr)
DE (1) DE102012017223A1 (fr)
ES (1) ES2546608T3 (fr)
PL (1) PL2700499T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018132949A1 (de) 2018-12-19 2020-06-25 Mannesmann Line Pipe Gmbh Rohr aus Stahl mit einer Kunststoffummantelung als Schutzschicht gegen mechanische Beschädigungen, Herstellverfahren hierzu und Rohrleitung hieraus

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2614035A1 (de) * 1976-04-01 1977-10-06 Karl Heinz Vahlbrauk Rohr oder leitungselement
JP2003314753A (ja) 2002-04-17 2003-11-06 Jfe Engineering Kk 水輸送用二層被覆鋼管
DE102005023751A1 (de) * 2004-07-02 2006-02-09 Km Europa Metal Ag Leitungsrohr zum Transport von Medien
DE102005027162A1 (de) * 2005-03-08 2006-09-14 Walter Stucke Isolierte Rohrleitungen aus Stahl für Gasleitungen
DE102008008321B4 (de) * 2008-02-07 2017-09-28 Gerodur Mpm Kunststoffverarbeitung Gmbh & Co. Kg Schweißbares Mehrschicht-Kunststoffrohr

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018132949A1 (de) 2018-12-19 2020-06-25 Mannesmann Line Pipe Gmbh Rohr aus Stahl mit einer Kunststoffummantelung als Schutzschicht gegen mechanische Beschädigungen, Herstellverfahren hierzu und Rohrleitung hieraus

Also Published As

Publication number Publication date
PL2700499T3 (pl) 2015-11-30
EP2700499A1 (fr) 2014-02-26
DE102012017223A1 (de) 2014-02-27
ES2546608T3 (es) 2015-09-25

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